Introduction: In order to reduce patient setup error in treatment field, portal images with treatment beam (megavoltage x-ray) are widely used. These images are acquired by electronic portal imaging devices (EPID). However, portal images suffer from insufficient anatomical information, contrast, and spatial resolution, because of the fact that Compton scatter is the main photon...

improving the quality of medical images at pre and post-surgery operations are necessary for beginning and speeding up the recovery process. partial differential equations (pdes)-based models have become a powerful and well known tool in different areas of image processing such as denoising, multiscale image analysis, edge detection and other fields of image processing and computer vision. in t...

Introduction: Systemic lupus erythematosus is an autoimmune progressive connective tissue disease characterized by multiple organ involvement and a highly variable clinical course. The aim of this study was to predict the health-related quality of life of women with lupus based on perceived stress, fear of perceptual body image and psychological resilience. Methods: This descriptive-analytical...

introduction:  the  purpose  of  this  study  is  to  define  the  optimal  parameters  for  the  tomographic  reconstruction procedure in a routine single photon emission tomography. the hoffman brain phantom  is modified to evaluate the reconstruction method. the phantom was imaged in a 3 and 2-dimensional  conformation and the results were compared.   materials  and  methods:  the  2d  phant...

Technical limitations in image capturing usually impose defective, such as contrast degradation. There are different approaches to improve the contrast of an image. Among the exiting approaches, un-sharp masking is a popular method due to its simplicity in implementation and computation. There is an important parameter in un-sharp masking, named gain factor, which affects the quality of the enh...

Objective: The treatment of obesity besides weight loss will have numerous psychological effects. The obese patients have different body image, poor hope and quality of life that influence the process of their treatment. The aim of this study was to compare body image, quality of life and hope in obese women with diet therapy and obese women who are not under diet therapy. Materials and Method...

    Background: Since pulmonary angiography is the only non-invasive method for diagnosing pulmonary embolism, the use of radiation reduction methods without affecting the quality of images seems necessary. One of the simplest reasons for unnecessarily increasing of patient exposure is repetitive imaging due to poor image quality. Therefore, it is necessary to identify and ...

Background: Changes of body image following breast cancer is one of the factors affecting the quality of life of women with this disease. Objectives: Thus, the factors affecting the body image need to be identified to improve their quality of life. Therefore, this study aimed to investigate the factors affecting the body image in Iranian women diagnosed with breast cancer. Methods: In this cr...